the widow of 38-yard gerardo hernandez, the father of two, found himself in the line of fire, read a brief statement to reporters outside their home. >> i am truly devastated. we are all heartbroken and we'll miss him dearly. >> reporter: this morning, the iconic pillars of light, the symbol of l.a.x., 100 feet tall, are lit tsa blue in honor of the slain tsa man. as of this morning, all airlines, all terminals for the first time are back to normal operations. but as you can imagine for the many who work here and the thousands passes through, it's not easy to shake this. bianna? >> so many people still rattled by that event. david, all right, thanks to you. >>> while the suspect's motive remains a mystery this morning, we're learning more about the people who knew him, there are warning signs who could hold clues as to why he went on the shooting spree targeting tsa workers. abc's gio benitez has been covering the story. good morning. >> reporter: some of his classmates said that he was bullied. and that nobody really knew him. he was a so-called loaner and really, his life was a sec